Hey all I have a 92 yj Inl6 I really need to flush the whole system 1st question is there coolant overflow valves on the block and if so how many and where are they?, I cant find them and do I really need to crack em open??, once i open the bottom drain on Radiator do i run the jeep for a spell to pump out old water? or just start flushing and hoseing the radiator out.
Question 2 on a old 92 is seafoaming a gamble considering its 22 yrs old and no telling what kind of garbage it will brk up in the fuel system and inside the powerplant? I just dont want to open a can of worms here and screw stuff up, shld I seafoam the cooling system before flushing as well??. Thanx in adv..